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- Flag leaf stage 挑旗期
- The role of overirrigation improving photosynthesis decline of flag leaf was mainly at the latter stage and had no role for yield increase. 过量灌水改善旗叶光合衰退的效果主要表现在后期，对产量提高的意义并不大。
- Soluble protein, DNA, and RNA contents in flag leaf of cultivar senescence at early stage rapidly reduced and the activities of protease and nuclease rapidly raised. 早衰型小麦品种旗叶可溶性蛋白质含量、DNA和RNA含量下降快 ,蛋白酶和核酸酶活性上升快 ;
- Late season drought coinciding with the rice booting to heading stage affects the development of plant height, panicle exsertion, and flag leaf size, and causes significant yield loss. 水稻后期干旱条件下, 株高、剑叶长、剑叶宽以及包颈程度都会受到一定影响, 并导致产量的进一步损失。
- JZ Leaves stage, Wu Yi escorted up and speaks. （吉姆离开演讲台，吴仪上台发言。）
- This the first report of cytogenetic study of flag leaf position in common wheat ,Triticum aestivum L. 摘要 本文首次对小麦旗叶姿态进行了比较系统的细胞遗传学研究。
- The cultivars that had a high chl (a+b) value,low chl (a/b) value and relatively big Flag Leaf area could be selected in wheat breeding. 小麦育种上应选择生育后期叶绿素 (a +b)较高 ,叶绿素 (a/b)值低 ,且旗叶面积相对较大的品种。
- There were close correlation in the same SOD, POD, CAT, NR and GS activity, and MDA content between roots and flag leaf. 小麦生长发育后期根系与旗叶超氧化物歧化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)的活性、丙二醛(MDA)的含量、氮素代谢特性是相互联系、密切相关的；
- On the oth er hand,we also did some studies on the difference of photoperiodical reaction i n population and leaf stage effects. 另外还对群体内光周期反应差异及苗龄效应也作了研究。
- Effect of irrigation on photosynthesis decline of winter wheat flag leaf during senescence was studied with field plot experiment. 利用田间小区试验研究了不同灌水对冬小麦旗叶光合功能衰退的影响。
- The effects of deep cultivation-root cutting on the senescence of flag leaf after anthesis and yield have been studied for dry land wheat production. 在旱地大田条件下研究了深耘断根对旱地高产小麦花后旗叶衰老及产量的影响。
- At all stage of flag leaves senescence, we can find the activity of C_4 pathway enzymes:PEPCase,PPDK,NADP-ME,NADP-MDH. We surmise that there are C_4 path-way in hybrid rices. 本实验亦证明在剑叶全展后的各时期均能测定到C_4途径关键酶:PEPCase、PPDK、NADP-ME和NADP-MDH的活性,推测在供试材料中可能存在有C_4途径。
- Plastic film mulching markedly increased biomass per a plant,flag leaf area,tillers per unit soil area,grains per ear and 1 000-grain weight. 覆膜显著增加单株生物量、旗叶面积、亩穗数、穗粒数和千粒重。
- Compared with coated control, researches were carried out about the biological characteristics in the germinating process, the cotyledon stage and the leaf stage. 通过室内盆栽试验和田间小区种植试验,以包衣处理为对照,对丸粒化棉花种子萌发期、子叶期、真叶期的生物学特性进行了系统研究。
- As to the different parts of the plant in filling stage, the lower senescing stems and leaves volatilized more ammonia than the upper normally growing ears and flag leaves. 同一植株不同部位的挥发量相差很大，下部衰老茎叶的氨挥发量明显高于生长正常的上部穗和旗叶。
- Results indicated that the order of net photosynthetic rate of the flag leaf Was: Taishan No.1 (adaptability moderate) >Jinan No.13 (strong) >Changle No.5 (weak) . 结果表明，旗叶的光合速率顺序为: 泰山一号(中度耐肥)>济南13(高度耐肥)>昌乐5号(不耐肥)。
- The g enetic variance coefficients, broad sense-heritability and relative genetic adva nces of flag leaf inclination angles were high, and their selective effect was better. 结果表明：小麦旗叶倾角的遗传变异系数、广义遗传力和相对遗传进度较高，选择效果较好；
- Leaf rolling index (LAl) of flag leaf (from top) in 2 hybrids withhigher LRI reached 44%-47%, in 2 hybrids with medium LAl was l5%-l6%, in 2hybrids with low LAl was l0%-l l%. 下表面与上表面光合强度比在高叶片卷曲度组合中为1.;19-1
- The results showed that mesosulfuron can control Aegilops tauschii Coss. before three leave stage. 结果表明，甲基二磺隆在节节麦3叶期前用药，推荐剂量下防效80%25左右。
- The results showed that the SPAD values of different parents flag leaf existed considerable difference, the parent existed considerable difference at different growth stages too. 结果表明：不同亲本剑叶SPAD值存在着较大的差异，同一亲本在不同的发育时期SPAD值也存在着较大的差异。
